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Guerrilla Mail vs 33Mail: catalog facts
Guerrilla Mail	33Mail
Freemium Disposable addresses are free; using your own domain costs 9.99 USD per year.	Free Free for unlimited aliases on the 33mail subdomain.
Web	Web
No signup; address is ready immediately Choice of several domains	Unlimited free aliases on the service's subdomain Simple to create a new alias on demand for any signup
No encryption; inboxes are not private Many sites block its domains	Aliases live on 33mail's shared subdomain rather than a custom domain on the free tier Long-running service with a dated interface compared to newer alternatives
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.